Jar-closure.



lW. D. HALL.

MH cLosunE.

APPLICATION FILED APR. l5. 1914.

Patented Dec. 7, 1915.

WILLJIAM D. HALL 0F PHILADELPHIA, PENNSYLVANIA.

JAR-CLOSURE.

Specication of Letters Patent.

Patented Dec. t, 1915..

Application illed April 15, 1914. Serial No. 832,109.

To all 'whom t may concer/n.' l

Be it known that l[, WILLIAM D. HALL, a citizen of the United States,lresiding` at Philadelphia, in the county of Philadelphia and State ofPennsylvania, have invented certain new and use-ful improvements inJar-Closures, of which thc following is a specication.

My invention relates to improvements in jar closures, the object of theinvention being to provide a closure consisting or a paper disk or aphaving annular portions interlocking with the neck of the bottle,l saidannular portions and the body portion of the disk, constituting a singleintegral part formed by molding.

Heretofore in the manufacture of disk closures for bottles, it has beenthe common practice to st.r mp the disks with diets, the paperbeingsupplied to the dies consistmg of flat sheets, which always have atendency to return to their normal sha e, hence any attempt to formannular bea sor enlargements by such method, results in failure becauseof the fact that the disks cannot be manufactured in such a manner atany cost within reason. It is the purpose of my improvement to form thecap or disk in a mold from a paper pulp, so that after the disk or capis molded, it will maintain its .sha e and form indefinitely, and notchange its shape or form as would'be the case with a disk formed by adie.

A further object is to provide an improved jar closure which coperateswith the end of the jar or bottle to provide a sanitary cover, and whichdispenses with the necessity of providing thefordinary inner recesswithin the necklof the bottle, as this recess is a means for catchingand retaining particles which result in an unsanitary condition.

With these and other objects in view, the invention consists in certainnovel features of construction and combinations and arrangements `ofparts as will be'l more fully hereinafter described and pointed out inthe claims.

In the accompanying drawings: Pigure l if is a view in longitudinalsection illustratin my improvements in connection with a mil bottle.Pig. 2 is a bottom plan view of the disk shown in Fig. 1. Fig. 3 is aview in section on an enlarged scale illustrating the disk shown inPigs. 1 and 2, and Pigs. 4,

5, 6, 7, 8, and 9, are views similar to Fig. 3 illustratingmodifications.

1 represents a milk bottle having an annular recess 2 at its outer edgeat the eX- treme end of the neck portion 3. This end of the neck portionis also provided with a circular groove 4 located approximately midwaybetween the outer and inner edges of the end of the bottle neck.

ln Figs. 1, 2, and 3, Iillustrate a preferred form of disk or cap 5,which is provided with a central circular enlargement 6, which fitswithin the mouth of the bottle and forms a snug closure therefor. Thisenlargement 6 is recessed centrally as shown at 7 to economize material,but it is to be understood that the enlargement will be of a suflicientdepth to insure a tight lock or seal with the mouth of the bottle. Thedisk 5 is provided on its under face with a circular rib 8, spaced from,but concentric with the enlargement 6. This rib 8 fits in the groove 4of the bottle neck and acts as a seal. At the outer edge of the disk 5,an annular flange 9 is the shape of the annular groove 2. While theflange fits snugly in the groove, the disk is of a slightly greaterdiameter than the end of the bottle neck, so that the edges of theflange portion 9 will project slightly beyond the sides of thef bottlleieck, and aords a gri in oint or t e ngers.

liipth iiiodiication illustrated in Fig. 4, the disk 5 is constructedprecisely like the preferred form with the exception that the outerflange 11, corresponding to the flange 9 of the preferred form, is madewith sharp angles and not rounded. With this form, it would of course,be necessary to slightly change the shape of the groove 2 in the bottle.

The disk illustrated in Fig. 5, dispenses with the outer flanges 9 and10 of the forms above' described, and provides in lieu-thereof, acircular bead 12 on the upper face of the disk at its outer edge.

The disk illustrated in Fig. 6, is precisely like the one shown in F ig.4, with the exception that the circular rib 8 is dispensed with. Thedisk shown in Fig. 7 also dispenses with the circular rib 8, bututilizes the rib 12 on the upper face of the disk.

The disk shown in Pig. 8 dispenses with all outer ribs and flanges, andrelies solely upon the enlargement 6 as a locking means for the cap. v

The disk shown in Fig. 9 dispenses with the enlargement 6, and utilizesthe ribs 8 and l1 as indicated in Fig. 4.

.Vvlith all forms of my improvement, the

. bottle engaging annular portions which project from the face of thedisk, constitute integral parts of the disk, and are molded as a portionof the device. l

Whiley my invention is not limited to any particular material, II mayuse various forms of pulp which can be rapidly molded While in a liquidstate, and When molded, the several parts of the disk Will remain asmolded and not change their form When subjected to moisture. This isalways a defect of any disk which is stamped, because as soon as it issubjected to moisture and then dried, it Will change its form and loseits efficiency. With my improved disk, I can use a compositionWhichvvill resist the action of acids as Well as ordinary liquids, andin Which there is no tendency of the disk -to change its form Whensubjected to moisture.

Various' other slight changes might be made in the general form andarrangementof parts described Without departing from my invention, andhence I do not limit myself to the precise details set forth, butconsider myself at liberty to make such changes and alterations asfairly fall Within the spirit and scope of the appended claims.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is:

1. The combination with a receptacle having Ia smooth inner surface atits open end,

and an annular groove in its outer surface at lts open end, of a paperclosure comprising a disk having an integral central enlargement ttingWithin the smooth open end of the receptacle, and having an integralannular flange located in the said groove, said fiange of a greaterthickness than the groove, whereby the flange projects beyond the outersurface of the receptacle, substantially as described.

2. The combination with a receptacle having an annular groove in itsouter edge at its open end, of a paper closure comprising a disk havingan integral central enlargement fitting Within the open end of thereceptacle and having an integral annular flange located in the saidgroove with the edges of the flange projecting slightly beyond the Wallof the receptacle, substantially as described.

3. The combination With a receptacle having an annular groove in itsouter edge at its open end, of a paperclosure comprising a disk havingan integral central enlargement fitting Within the open end of thereceptacle and having an integral annular Aflange located in the saidgroove With the edges of -the flange projecting slightly beyond the Wallof the receptacle, said receptacle having in its outer end la Acirculargroove, and sa1d closure having a circular rib fitting Within I thegroove, substantially as described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing Witnesses.

WILLIAM D. I-IALL. vWitnesses:

CHAs. E. Po'rrs, M. E. Drr'rUs.

